Evolution unfolds in a world that is constantly changing, but not all kinds of change shape populations in the same way. Using a large-scale computer model, researchers replayed evolution across many ...

The trade-off between quality and quantity is a fundamental economic dilemma. Now, a team of British, American, and Japanese researchers describes how it applies to biology, as well. They have ...

The skull had the brow of a descendant but the face of an ancestor. When researchers finished reconstructing the DAN5/P1 cranium from Ethiopia’s Afar region, dated to between 1.6 and 1.5 million years ...